diff --git a/app.js b/app.js
index 7476fa9..d28c864 100644
--- a/app.js
+++ b/app.js
@@ -1,133 +1,133 @@
-const grid = document.querySelector('.grid')
-const resultsDisplay = document.querySelector('.results')
-let currentShooterIndex = 202
-let width = 15
-let direction = 1
-let invadersId
-let goingRight = true
-let aliensRemoved = []
-let results = 0
+const grid = document.querySelector('.grid');
+const resultsDisplay = document.querySelector('.results');
+let currentShooterIndex = 202;
+let width = 15;
+let direction = 1;
+let invadersId;
+let goingRight = true;
+let aliensRemoved = [];
+let results = 0;
 
 for (let i = 0; i < 225; i++) {
-  const square = document.createElement('div')
-  grid.appendChild(square)
+  const square = document.createElement('div');
+  grid.appendChild(square);
 }
 
-const squares = Array.from(document.querySelectorAll('.grid div'))
+const squares = Array.from(document.querySelectorAll('.grid div'));
 
 const alienInvaders = [
   0,1,2,3,4,5,6,7,8,9,
   15,16,17,18,19,20,21,22,23,24,
   30,31,32,33,34,35,36,37,38,39
-]
+];
 
 function draw() {
   for (let i = 0; i < alienInvaders.length; i++) {
     if(!aliensRemoved.includes(i)) {
-      squares[alienInvaders[i]].classList.add('invader')
+      squares[alienInvaders[i]].classList.add('invader');
     }
   }
 }
 
-draw()
+draw();
 
 function remove() {
   for (let i = 0; i < alienInvaders.length; i++) {
-    squares[alienInvaders[i]].classList.remove('invader')
+    squares[alienInvaders[i]].classList.remove('invader');
   }
 }
 
-squares[currentShooterIndex].classList.add('shooter')
+squares[currentShooterIndex].classList.add('shooter');
 
 
 function moveShooter(e) {
-  squares[currentShooterIndex].classList.remove('shooter')
+  squares[currentShooterIndex].classList.remove('shooter');
   switch(e.key) {
     case 'ArrowLeft':
-      if (currentShooterIndex % width !== 0) currentShooterIndex -=1
-      break
+      if (currentShooterIndex % width !== 0) currentShooterIndex -=1;
+      break;
     case 'ArrowRight' :
       if (currentShooterIndex % width < width -1) currentShooterIndex +=1
-      break
+      break;
   }
-  squares[currentShooterIndex].classList.add('shooter')
+  squares[currentShooterIndex].classList.add('shooter');
 }
-document.addEventListener('keydown', moveShooter)
+document.addEventListener('keydown', moveShooter);
 
 function moveInvaders() {
-  const leftEdge = alienInvaders[0] % width === 0
-  const rightEdge = alienInvaders[alienInvaders.length - 1] % width === width -1
-  remove()
+  const leftEdge = alienInvaders[0] % width === 0;
+  const rightEdge = alienInvaders[alienInvaders.length - 1] % width === width -1;
+  remove();
 
   if (rightEdge && goingRight) {
     for (let i = 0; i < alienInvaders.length; i++) {
-      alienInvaders[i] += width +1
-      direction = -1
-      goingRight = false
+      alienInvaders[i] += width +1;
+      direction = -1;
+      goingRight = false;
     }
   }
 
   if(leftEdge && !goingRight) {
     for (let i = 0; i < alienInvaders.length; i++) {
-      alienInvaders[i] += width -1
-      direction = 1
-      goingRight = true
+      alienInvaders[i] += width -1;
+      direction = 1;
+      goingRight = true;
     }
   }
 
   for (let i = 0; i < alienInvaders.length; i++) {
-    alienInvaders[i] += direction
+    alienInvaders[i] += direction;
   }
 
-  draw()
+  draw();
 
   if (squares[currentShooterIndex].classList.contains('invader', 'shooter')) {
-    resultsDisplay.innerHTML = 'GAME OVER'
-    clearInterval(invadersId)
+    resultsDisplay.innerHTML = 'GAME OVER';
+    clearInterval(invadersId);
   }
 
   for (let i = 0; i < alienInvaders.length; i++) {
     if(alienInvaders[i] > (squares.length)) {
-      resultsDisplay.innerHTML = 'GAME OVER'
-      clearInterval(invadersId)
+      resultsDisplay.innerHTML = 'GAME OVER';
+      clearInterval(invadersId);
     }
   }
   if (aliensRemoved.length === alienInvaders.length) {
-    resultsDisplay.innerHTML = 'YOU WIN'
-    clearInterval(invadersId)
+    resultsDisplay.innerHTML = 'YOU WIN';
+    clearInterval(invadersId);
   }
 }
-invadersId = setInterval(moveInvaders, 600)
+invadersId = setInterval(moveInvaders, 600);
 
 function shoot(e) {
-  let laserId
-  let currentLaserIndex = currentShooterIndex
+  let laserId;
+  let currentLaserIndex = currentShooterIndex;
   function moveLaser() {
-    squares[currentLaserIndex].classList.remove('laser')
-    currentLaserIndex -= width
-    squares[currentLaserIndex].classList.add('laser')
+    squares[currentLaserIndex].classList.remove('laser');
+    currentLaserIndex -= width;
+    squares[currentLaserIndex].classList.add('laser');
 
     if (squares[currentLaserIndex].classList.contains('invader')) {
-      squares[currentLaserIndex].classList.remove('laser')
+      squares[currentLaserIndex].classList.remove('laser');
       squares[currentLaserIndex].classList.remove('invader')
-      squares[currentLaserIndex].classList.add('boom')
+      squares[currentLaserIndex].classList.add('boom');
 
-      setTimeout(()=> squares[currentLaserIndex].classList.remove('boom'), 300)
-      clearInterval(laserId)
+      setTimeout(()=> squares[currentLaserIndex].classList.remove('boom'), 300);
+      clearInterval(laserId);
 
-      const alienRemoved = alienInvaders.indexOf(currentLaserIndex)
-      aliensRemoved.push(alienRemoved)
-      results++
-      resultsDisplay.innerHTML = results
-      console.log(aliensRemoved)
+      const alienRemoved = alienInvaders.indexOf(currentLaserIndex);
+      aliensRemoved.push(alienRemoved);
+      results++;
+      resultsDisplay.innerHTML = results;
+      console.log(aliensRemoved);
 
     }
 
   }
   switch(e.key) {
     case 'ArrowUp':
-      laserId = setInterval(moveLaser, 100)
+      laserId = setInterval(moveLaser, 100);
   }
 }
 
-document.addEventListener('keydown', shoot)
+document.addEventListener('keydown', shoot);